46295 + Interview Questions in Chemistry

1.	A solution is made by mixing equal volumes of 30% by weight of H2SO4 (density = 1.218 g/mL) and 70% by weight of H2SO4 (density = 1.610 g/mL). Then find the molarity of the final solution?
Answer» A solution is made by mixing equal volumes of $30 %$ by weight of $H_{2} S O_{4}$ (density = $1.218$ g/mL) and $70 %$ by weight of $H_{2} S O_{4}$ (density = $1.610$ g/mL). Then find the molarity of the final solution?

Discussion

2.	Chloroform on reaction with chlorine and oxidation with air respectively gives
Answer» Chloroform on reaction with chlorine and oxidation with air respectively gives

Discussion

3.	The no of molecule present in 1gm of sodium
Answer» The no of molecule present in 1gm of sodium

Discussion

4.	What are the characteristics of Democritus’ atom that the author is eager to understand? I. The atom is quite similar to helium or hydrogen, II.The atom would be one of tiniest constituents of the universe. III.The atom would not be further reducible IV. The atom would not obey any laws.
Answer» What are the characteristics of Democritus’ atom that the author is eager to understand? I. The atom is quite similar to helium or hydrogen, II.The atom would be one of tiniest constituents of the universe. III.The atom would not be further reducible IV. The atom would not obey any laws.

4.

What are the characteristics of Democritus’ atom that the author is eager to understand? I. The atom is quite similar to helium or hydrogen, II.The atom would be one of tiniest constituents of the universe. III.The atom would not be further reducible IV. The atom would not obey any laws.

Answer»

What are the characteristics of Democritus’ atom that the author is eager to understand?

I. The atom is quite similar to helium or hydrogen,

II.The atom would be one of tiniest constituents of the universe.

III.The atom would not be further reducible

IV. The atom would not obey any laws.

Discussion

5.	Fill in the blanks: ………….. named carbon. Buckminster Fullerene contains ……………. carbon atoms. Compounds with the same molecular formula and different structural formula are known as ……………… Different methods of formation of carbon are the main reason for its ……………….. There are …………….. plastic resin codes.
Answer» Fill in the blanks: ………….. named carbon. Buckminster Fullerene contains ……………. carbon atoms. Compounds with the same molecular formula and different structural formula are known as ……………… Different methods of formation of carbon are the main reason for its ……………….. There are …………….. plastic resin codes.

5.

Fill in the blanks: ………….. named carbon. Buckminster Fullerene contains ……………. carbon atoms. Compounds with the same molecular formula and different structural formula are known as ……………… Different methods of formation of carbon are the main reason for its ……………….. There are …………….. plastic resin codes.

Answer»

Fill in the blanks:

………….. named carbon.

Buckminster Fullerene contains ……………. carbon atoms.

Compounds with the same molecular formula and different structural formula are known as ………………

Different methods of formation of carbon are the main reason for its ………………..

There are …………….. plastic resin codes.

Discussion

6.	33.If Z > 1 then on applying pressure the gas will respond by increasing its volume . is this statement true or false ?
Answer» 33.If Z > 1 then on applying pressure the gas will respond by increasing its volume . is this statement true or false ?

Discussion

7.	Which of the following reactions will give a secondary amine as the final nitrogen containing product?
Answer» Which of the following reactions will give a secondary amine as the final nitrogen containing product?

Discussion

8.	The average velocity at T K of CO2 gas is 9.0×104 cm sec−1. The value of T is______.
Answer» The average velocity at $T K$ of $C O_{2}$ gas is $9.0 \times 10^{4} {cm sec}^{- 1}$ . The value of $T$ is______.

Discussion

9.	the range of {x}/1 +{x} where {} is fractional part
Answer» the range of {x}/1 +{x} where {} is fractional part

Discussion

10.	The crystalline salt Na2SO4.xH20 on heating loses 55.9% of its mass and becomes anhydrous . What is the value of x?
Answer» The crystalline salt Na2SO4.xH20 on heating loses 55.9% of its mass and becomes anhydrous . What is the value of x?

Discussion

11.	2. What is the difference between a polyhalide compound and interhalogen compound??
Answer» 2. What is the difference between a polyhalide compound and interhalogen compound??

Discussion

12.	What is demulsification?
Answer» What is demulsification?

Discussion

13.	The resistance of N/10 KCl aqueous solution is 25ohm. If the electrodes in the cell are 4cm apart and area having 7cm^2 each, the molar conductance of the solution will be:
Answer» The resistance of N/10 KCl aqueous solution is 25ohm. If the electrodes in the cell are 4cm apart and area having 7cm^2 each, the molar conductance of the solution will be:

Discussion

14.	How to find unit vector perpendicular to a vector
Answer» How to find unit vector perpendicular to a vector

Discussion

15.	Ethyl chloride and iso butyl chloride are members of homologous pairs
Answer» Ethyl chloride and iso butyl chloride are members of homologous pairs

Discussion

16.	Which of the following curves assures that the metal obtained by carbon reduction is the vapour state?
Answer» Which of the following curves assures that the metal obtained by carbon reduction is the vapour state?

Discussion

17.	46.Will eth+diene be ethdiene?
Answer» 46.Will eth+diene be ethdiene?

Discussion

18.	The molarity of Cl- in an aqueous solution which has w/v 2% NaCl, 4% CaCl2 and 6% NH4Cl will be a) 0.342 b) 0.721 c) 1.12 d) 2.18
Answer» The molarity of Cl^- in an aqueous solution which has w/v 2% NaCl, 4% CaCl₂and 6% NH₄Cl will be a) 0.342 b) 0.721 c) 1.12 d) 2.18

18.

The molarity of Cl- in an aqueous solution which has w/v 2% NaCl, 4% CaCl2 and 6% NH4Cl will be a) 0.342 b) 0.721 c) 1.12 d) 2.18

Answer»

The molarity of Cl^- in an aqueous solution which has w/v 2% NaCl, 4% CaCl₂and 6% NH₄Cl will be

a) 0.342

b) 0.721

c) 1.12

d) 2.18

Discussion

19.	What is the order of bond enthalpy of C-N, C-C and C-H bond and why?
Answer» What is the order of bond enthalpy of C-N, C-C and C-H bond and why?

Discussion

20.	If the E∘cell for a given reaction has a negative value, which of the following gives the correct relationships for the values of ΔG∘ and Keq ?
Answer» If the $E_{c e l l}^{\circ}$ for a given reaction has a negative value, which of the following gives the correct relationships for the values of $Δ G^{\circ}$ and $K_{e q}$ ?

Discussion

21.	18.What is ray theory?
Answer» 18.What is ray theory?

Discussion

22.	Potassium crystallizes in a body centered lattice how many unit cells are present in 2g potassium ?? Why we divide it by 2 in last? It belongs to body centered lattice and a particle at the body centre of a unit cell belongs only to the particular unit cell hence 1atom should be equal to 1 unit cell?
Answer» Potassium crystallizes in a body centered lattice how many unit cells are present in 2g potassium ?? Why we divide it by 2 in last? It belongs to body centered lattice and a particle at the body centre of a unit cell belongs only to the particular unit cell hence 1atom should be equal to 1 unit cell?

Discussion

23.	Which of the compound (s) does not respond to Fehling's test?
Answer» Which of the compound (s) does not respond to Fehling's test?

Discussion

24.	if pkb of flouride ion at 25'c is 10.83 the ionization cons†an t of hydroflouric acid in water at this temperature
Answer» if pkb of flouride ion at 25'c is 10.83 the ionization cons†an t of hydroflouric acid in water at this temperature

Discussion

25.	33. How many unit cells are there in a (a)1.0gm cubic crystal of NaCl?and (b)along each edge of the Crystal.
Answer» 33. How many unit cells are there in a (a)1.0gm cubic crystal of NaCl?and (b)along each edge of the Crystal.

Discussion

26.	Which of the following reaction can be used for the synthesis of alkene
Answer» Which of the following reaction can be used for the synthesis of alkene

Discussion

27.	48.The correct sequence of increasing covalent chararcter is represented by 1)LiCl < NaCl < BeCl2 2)BeCl2 < LiCl < NaCl 3)NaCl < LiCl < BeCl 4)BeCl < NaCl
Answer» 48.The correct sequence of increasing covalent chararcter is represented by 1)LiCl < NaCl < BeCl2 2)BeCl2 < LiCl < NaCl 3)NaCl < LiCl < BeCl 4)BeCl < NaCl

Discussion

28.	explain the process of chromatography ?
Answer» explain the process of chromatography ?

Discussion

29.	order of acidic strength: methyl benzene ethyl benzene 1methyl ethyl benzene 1,1 dimethyl ethyl benzene
Answer» order of acidic strength: methyl benzene ethyl benzene 1methyl ethyl benzene 1,1 dimethyl ethyl benzene

Discussion

30.	What is the chemical composition of 'slag' formed during smelting in the extraction of copper?
Answer» What is the chemical composition of 'slag' formed during smelting in the extraction of copper?

Discussion

31.	What are antiseptics?
Answer» What are antiseptics?

Discussion

32.	Consider the following carbanions and arrange the decreasing order of their stability
Answer» Consider the following carbanions and arrange the decreasing order of their stability

32.

Consider the following carbanions and arrange the decreasing order of their stability

Answer»

Consider the following carbanions and arrange the decreasing order of their stability

Discussion

33.	According to Einstein's photoelectric equation, the graph between kinetic energy of photoelectrons ejected and the frequency of the incident radiation is:
Answer» According to Einstein's photoelectric equation, the graph between kinetic energy of photoelectrons ejected and the frequency of the incident radiation is:

Discussion

34.	Which of the following does not turn orange colourof chromic acid to green(1) 1^° alcohol(3) 30 alcoholHan0)(2) 2^° alcohol(4) Allyl alcohol
Answer» Which of the following does not turn orange colourof chromic acid to green(1) 1^° alcohol(3) 30 alcoholHan0)(2) 2^° alcohol(4) Allyl alcohol

Discussion

35.	CaCO3 does not dissolve in water, but in the presence of CO2 it dissolves to form ′X′ ′X′ is
Answer» $C a C O_{3}$ does not dissolve in water, but in the presence of $C O_{2}$ it dissolves to form $^{'} X^{'}$ $^{'} X^{'}$ is

35.

CaCO3 does not dissolve in water, but in the presence of CO2 it dissolves to form ′X′ ′X′ is

Answer»

$C a C O_{3}$ does not dissolve in water, but in the presence of $C O_{2}$ it dissolves to form $^{'} X^{'}$

$^{'} X^{'}$ is

Discussion

36.	9.45 g of CH2ClCOOH is dissolved in 500 mL of H2O solution and the depression in freezing point of the solution is 0.5∘C. Find the percentage dissociation.(Kf)H2O=1.86 K kg mole −1.Take Density of H2O=1 g/mL
Answer» $9.45 g$ of $C H_{2} C l C O O H$ is dissolved in $500 m L$ of $H_{2} O$ solution and the depression in freezing point of the solution is ${0.5}^{\circ} C$ . Find the percentage dissociation. $(K_{f})_{H_{2} O} = 1.86 K k g {mole}^{- 1}$ . Take $Density of H_{2} O = 1 g / m L$

Discussion

37.	An amount of 4 moles of an ideal monoatomic gas expands adiabatically and reversible by which its temperature decreases from 47 oC to 17 oC.Which of the following is/are true?(Given, R=8.3 J K−1 mol−1, 1 Joule=0.23 cal)
Answer» An amount of $4$ moles of an ideal monoatomic gas expands adiabatically and reversible by which its temperature decreases from $47^{o} C$ to $17^{o} C$ . Which of the following is/are true? $(Given, R = 8.3 {J K}^{- 1} {mol}^{- 1}, 1 Joule = 0.23 cal)$

Discussion

38.	ntA quantity of electric charge that brings about the deposition of 4.5 gm AL from AL3+ at the cathode will also produce the following volume (STP) of H2 from H+ at the cathoden nt1. 44.8 ltrn nt2. 22.4 ltrn nt3. 11.2 ltrn nt4. 5.6 ltrn
Answer» ntA quantity of electric charge that brings about the deposition of 4.5 gm AL from AL3+ at the cathode will also produce the following volume (STP) of H2 from H+ at the cathoden nt1. 44.8 ltrn nt2. 22.4 ltrn nt3. 11.2 ltrn nt4. 5.6 ltrn

Discussion

39.	224 mL of SO2(g) at 298 K and 1 atm is passed through 100 mL of 0.1 M NaOH solution. The non-volatile solute produced is dissolved in 36 g of water. The lowering of vapour pressure of solution (assuming the solution is dilute) (PH2O=24 mm Hg) is x×10−2 mm Hg, the value of x is _____.
Answer» $224 m L$ of $S O_{2} (g)$ at $298 K$ and $1 a t m$ is passed through $100 m L$ of $0.1 M N a O H$ solution. The non-volatile solute produced is dissolved in $36 g$ of water. The lowering of vapour pressure of solution (assuming the solution is dilute) $(P_{H_{2} O} = 24 m m H g)$ is $x \times 10^{- 2} m m H g,$ the value of $x$ is _____.

Discussion

40.	if anion of ammonium ion salt is more oxidising then heating of this salt produceNH3N2NO2NONE OF THE ABOVE
Answer» if anion of ammonium ion salt is more oxidising then heating of this salt produce NH3 N2 NO2 NONE OF THE ABOVE

Discussion

41.	Ge(II) compounds are powerful reducing agents whereas Pb(IV) compounds are strong oxidants, because
Answer» Ge(II) compounds are powerful reducing agents whereas Pb(IV) compounds are strong oxidants, because

Discussion

42.	What are the causes of lanthanide contraction?
Answer» What are the causes of lanthanide contraction?

Discussion

43.	Summation of r (upto 0 to 1) 2r-1 =? Explanation
Answer» Summation of r (upto 0 to 1) 2r-1 =? Explanation

Discussion

44.	Which one of the following has a square planar geometry?
Answer» Which one of the following has a square planar geometry?

Discussion

45.	A mixture of 1.65×1021 molecules of X and 1.85×1021 molecules of Y weighs 0.688 grams. The molecular weight of X is ( if molecular wt of Y is 187 )
Answer» A mixture of 1.65×10²¹molecules of X and 1.85×10²¹ molecules of Y weighs 0.688 grams. The molecular weight of X is ( if molecular wt of Y is 187 )

Discussion

46.	KCl crystallizes in the same type of lattice as NaCl. Given that rNa+rCl−=0.50 and rK+rCl−=0.70. Calculate the ratio of the side of the unit cell for KCl to that for NaCl(Give your answer upto two decimal value)
Answer» $K C l$ crystallizes in the same type of lattice as $N a C l$ . Given that $\frac{r_{N a^{+}}}{r_{C l^{-}}} = 0.50$ and $\frac{r_{K^{+}}}{r_{C l -}} = 0.70$ . Calculate the ratio of the side of the unit cell for $K C l$ to that for $N a C l$ (Give your answer upto two decimal value)

Discussion

47.	how to determine wether a compound is molecular solid, covalent solid, ionic solid, metallic solid, amorphous solid,
Answer» how to determine wether a compound is molecular solid, covalent solid, ionic solid, metallic solid, amorphous solid,

Discussion

48.	Number of optically active isomer of tartaric acid CH(OH)COOH \| CH(OH)COOH is
Answer» Number of optically active isomer of tartaric acid $C H (O H) C O O H \| C H (O H) C O O H$ is

Discussion

49.	32. 2 flasks X and H have capacity 1 L and 2 L respectively and each contain 1 mole of gas the temperature of flask is so adjusted hat average speed of molecules in X is twice than in Y. The pressure in flask X would be a. Same as in Y b half than Y c. Twice than Y d. 8 times than Y
Answer» 32. 2 flasks X and H have capacity 1 L and 2 L respectively and each contain 1 mole of gas the temperature of flask is so adjusted hat average speed of molecules in X is twice than in Y. The pressure in flask X would be a. Same as in Y b half than Y c. Twice than Y d. 8 times than Y

Discussion

50.	how to find Zeffective of zinc
Answer» how to find Zeffective of zinc

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A solution is made by mixing equal volumes of 30% by weight of H2SO4 (density = 1.218 g/mL) and 70% by weight of H2SO4 (density = 1.610 g/mL). Then find the molarity of the final solution?

Chloroform on reaction with chlorine and oxidation with air respectively gives

The no of molecule present in 1gm of sodium

What are the characteristics of Democritus’ atom that the author is eager to understand? I. The atom is quite similar to helium or hydrogen, II.The atom would be one of tiniest constituents of the universe. III.The atom would not be further reducible IV. The atom would not obey any laws.

33.If Z > 1 then on applying pressure the gas will respond by increasing its volume . is this statement true or false ?

Which of the following reactions will give a secondary amine as the final nitrogen containing product?

The average velocity at T K of CO2 gas is 9.0×104 cm sec−1. The value of T is______.

the range of {x}/1 +{x} where {} is fractional part

The crystalline salt Na2SO4.xH20 on heating loses 55.9% of its mass and becomes anhydrous . What is the value of x?

2. What is the difference between a polyhalide compound and interhalogen compound??

What is demulsification?

The resistance of N/10 KCl aqueous solution is 25ohm. If the electrodes in the cell are 4cm apart and area having 7cm^2 each, the molar conductance of the solution will be:

How to find unit vector perpendicular to a vector

Ethyl chloride and iso butyl chloride are members of homologous pairs

Which of the following curves assures that the metal obtained by carbon reduction is the vapour state?

46.Will eth+diene be ethdiene?

The molarity of Cl- in an aqueous solution which has w/v 2% NaCl, 4% CaCl2 and 6% NH4Cl will be a) 0.342 b) 0.721 c) 1.12 d) 2.18

What is the order of bond enthalpy of C-N, C-C and C-H bond and why?

If the E∘cell for a given reaction has a negative value, which of the following gives the correct relationships for the values of ΔG∘ and Keq ?

18.What is ray theory?

Which of the compound (s) does not respond to Fehling's test?

if pkb of flouride ion at 25'c is 10.83 the ionization cons†an t of hydroflouric acid in water at this temperature

33. How many unit cells are there in a (a)1.0gm cubic crystal of NaCl?and (b)along each edge of the Crystal.

Which of the following reaction can be used for the synthesis of alkene

48.The correct sequence of increasing covalent chararcter is represented by 1)LiCl < NaCl < BeCl2 2)BeCl2 < LiCl < NaCl 3)NaCl < LiCl < BeCl 4)BeCl < NaCl

explain the process of chromatography ?

order of acidic strength: methyl benzene ethyl benzene 1methyl ethyl benzene 1,1 dimethyl ethyl benzene

What is the chemical composition of 'slag' formed during smelting in the extraction of copper?

What are antiseptics?

Consider the following carbanions and arrange the decreasing order of their stability

According to Einstein's photoelectric equation, the graph between kinetic energy of photoelectrons ejected and the frequency of the incident radiation is:

Which of the following does not turn orange colourof chromic acid to green(1) 1^° alcohol(3) 30 alcoholHan0)(2) 2^° alcohol(4) Allyl alcohol

CaCO3 does not dissolve in water, but in the presence of CO2 it dissolves to form ′X′ ′X′ is

9.45 g of CH2ClCOOH is dissolved in 500 mL of H2O solution and the depression in freezing point of the solution is 0.5∘C. Find the percentage dissociation.(Kf)H2O=1.86 K kg mole −1.Take Density of H2O=1 g/mL

An amount of 4 moles of an ideal monoatomic gas expands adiabatically and reversible by which its temperature decreases from 47 oC to 17 oC.Which of the following is/are true?(Given, R=8.3 J K−1 mol−1, 1 Joule=0.23 cal)

ntA quantity of electric charge that brings about the deposition of 4.5 gm AL from AL3+ at the cathode will also produce the following volume (STP) of H2 from H+ at the cathoden nt1. 44.8 ltrn nt2. 22.4 ltrn nt3. 11.2 ltrn nt4. 5.6 ltrn

224 mL of SO2(g) at 298 K and 1 atm is passed through 100 mL of 0.1 M NaOH solution. The non-volatile solute produced is dissolved in 36 g of water. The lowering of vapour pressure of solution (assuming the solution is dilute) (PH2O=24 mm Hg) is x×10−2 mm Hg, the value of x is _____.

if anion of ammonium ion salt is more oxidising then heating of this salt produceNH3N2NO2NONE OF THE ABOVE

Ge(II) compounds are powerful reducing agents whereas Pb(IV) compounds are strong oxidants, because

What are the causes of lanthanide contraction?

Summation of r (upto 0 to 1) 2r-1 =? Explanation

Which one of the following has a square planar geometry?

A mixture of 1.65×1021 molecules of X and 1.85×1021 molecules of Y weighs 0.688 grams. The molecular weight of X is ( if molecular wt of Y is 187 )

KCl crystallizes in the same type of lattice as NaCl. Given that rNa+rCl−=0.50 and rK+rCl−=0.70. Calculate the ratio of the side of the unit cell for KCl to that for NaCl(Give your answer upto two decimal value)

how to determine wether a compound is molecular solid, covalent solid, ionic solid, metallic solid, amorphous solid,

Number of optically active isomer of tartaric acid CH(OH)COOH | CH(OH)COOH is

32. 2 flasks X and H have capacity 1 L and 2 L respectively and each contain 1 mole of gas the temperature of flask is so adjusted hat average speed of molecules in X is twice than in Y. The pressure in flask X would be a. Same as in Y b half than Y c. Twice than Y d. 8 times than Y

how to find Zeffective of zinc